I buy at sams not Costco but I fully inspect the brisket before buying. I usually have them bring out what they have in back to find the largest flat. Sometimes I need to do some trimming but I get the largest flat for the money.
Out of curiosity what's the going rate on packers down in Texas? I'm paying $2.48 a pound.
UDS (not so U) UDD, 22.5 OTS, Coming soon: mini UDS & double barreled RFS